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Scott E Page Fitting Lines to Data R-squared: % Variation Explained Example scatter plot with regression line fitted Independent variable (units) http://web.anglia.ac.uk R-Squared % Variation Explained Grade Variation? 8 Shoe Size Grade 10 ( 1 , 1 , 2 ) ( 2 , 5 , 4 ) ( 4 , 9 , 8 ) R-Squared 11 * 2 “ (r 2 ^ (2m+b-^) 2 12 tk<e*r ## MODEL ai,-s/3) ( 2 , 5 , 13 / 3 ) • 44 , 09 / 3 ) 1 R-Squared 13 Shoe Size Grade Scott E Page